Question

You
aretrying to photograph a bird sitting on a tree branch, but a
tallhedge is blocking your view. However, as the drawing shows, a
planemirror reflects light from the bird into your camera.If
x = 3.3 mand y = 4.2 m in the drawing, for what
distance mustyou set the focus of the camera lens in order to snap
a sharppicture of the bird's image?
m